Truck-bolster and car-truck.



J. J. BYERS.

TRUCK BoLsTBB AND GAB TRUCK.

n LPPLIOATIUH -IILBD JULY 10, 190B. 91 9,690. Patented Apr. 27, 1909.

ZSHEBTS-SHEBT 1. I

INVENTOR KWW Qmm ENS'. Qmu. *in 03h11.

J. J. BYERS. TRUCK HOLSTER AND GAB TRUCK.

APPLZGATOH IILED JULY 10,1908.

Patented A111227, 1909.

2 SHEETS-SHEET Z.

iE/ud/MW n hetneen the rross or transmit hars -l ol the v said rol Vtherollers, aiid these surfaees and also the TRUCK-BOLSTER AND CAR-TRUCK.

Specification of Letters Patent.

Fatented'April 27. 1909.

Application led July 10, '1908. Serial No. 442,831.

lie it known that l. Jaron J. Bri-lus, of; (Tameron. (limon county.Missouri, have invented a new' and useful improvement in'lrtnli-lolsters and t'ar-'l`rneks, of which the followinpr is a. lull`clear, and t .art hM rip-v ioi, i'efei'enee heilig had to theaetoiupaiiV- ing,y drawings, formingr part vol' this specifi-g eation,iu whit-li Figure l is a plan view of my improved eonstruction; Fig. 2is a vertical section of i the bolster; Fig. 2) is a section on the linel lll-lll of Fig. l Fig. 4 Ais a. plan View of the l spring plate.

M v invention relates to trurk holsters and ear truelis and has for itsobject to provide n, holster which ill allow the ear truek to passaround eurvesl without the usual binding,r etl'eet hetneen thc trut-liand the ear which is ineident. to holsters and trneksof ordinaryeonstiuetion. l accomplish thisobject by a swinging holster adapted tohe supported :it its ends by roller hearings.

My invention eau ho best understood by referenee to the drawings. lnthestdrawings, Figs. t, 2, It andl l, is the raitruck traine whieh isirel'ei'abl) east in a .single integral pit-ee, afihough it may he ofany suitable eonstruetitm.

3 designates the holster, whieh is seated trueli traine and whieh isforint-,l `with a eylindrieeenter he'aring`r portion whieh hears atopposite sides in the e'oneave surfaces ti of the eross hars -l. mheholster is of less transg verse width than 'the distance between the ihars 4, and tapers toward its ends whit-h extend iiito pm'kets T iu theside members of thetrueh l'ralne. The end portions ol' the bolster areeaeh seated upon a series ol' tapered or eouieal rollersl nhirh lzear ona pluie El which is supported un a .series of foiled springs ttl.'ihesesprings are seated at their lower ends mrthe hottoni wall ll. 'lheunder surl'aees ol the holster ends are slightly tapered to tornihearing surl'aees for upper surl'aees of the spring,r plates- J arel'oiuied with eoiicavitier; or depressions l2 for the rollers M whiehprevent the mas-sing of tho rollers. Said plates are also provided withthe limiting ribs or llanges I3 ol.' the i rollers; and the under sidesof the holstein ends have eorresponding Ilanges t-l. The plates are alsoprovided with the lateral pr= ltttions l5 at their elltl lmrtionswhiehextend into the otl'set 16 in the walls of the pockets 7 and in theeross-hars 4, and engage 'the shoulders IT formed by said offsets,

thereby holding the plates against movement. lhev bottoms of the otl'set16 ai'eclosed to form stops which by engagement with the projections Iserve to limit the downward travel of the bolster and act as n. safetyde- .viee to keep the bolster from dropping in case the spring shouldbreak.

[n operation, the bolster has'a. limited swinging movement between thabars 4 in rounding curves, the ends of the bolster moving on the rollers8. By reason of. the

eoncavities or depressions 12, the rollers will Areturn to theirnornialspnced positiens as soon as the car reaches a straight track.-

This keeps the rollers normally central in the -i'espectivo depressionsand prevents inassing thereof.

Many Changes may be inode in the construction sliown and my inventionmay be applied to car and truck bolsters of many types, withoutdeparting from my invention, since What I elaini is:

l. A truck bolster mounted to swin about .a vertical central axis andsupporte ut its end portions in the ear truck upon conical rollerbearings, said ear truck having a plate with de iressions therein adated to receive ler bearings, und sai truek bolster having bearingportions at its end with depressions therein corresponding to thedepressions of the plate in the cer truck; subi stantially as described.

3. A ear truck having a bolster mounted thereon to swing about itscentral vertical axis. rollers underneath the end portions of theholsters, plates upon which the rollers hear, and springs seated on thetruck frame and supporting said plates;,substantially as deseribed. l

3. .l ear truck having cross bars or transoms east in one piece with itsside frames, and forming a holster pocket between them,

and a bolster seated in said pocket and ar ranged to have a limitedradial swinging movement therein; substantially ns deserihed.

1. 4A ear truek having cross bars o`r transoms east in one piece withits side frames, forming a bolster pocket between them, a

holster seated in said pocket and arranged to havefa, limited radialswinging movement ltbiein, together with roller bearings mountl 'Y ed011 said. rulnc and 'carrying thv vnds nl' {mi-tions nl' thv lmmcr, :iplnnl'nr thv rnllfw, the bolster: substantially :is described. mvingdoprvssvd purtiuns thm-vin mlnplcd l' 5. In :L cnr truck, n holsterhaving :1i-vntu rvrvivv said rullvrs, said huish-r having irai hearingun the` trurk lrnnm nrrnngufl ln l lui-:ning lmrtions :it ifs vnd withli-pl'ussinns 5 have :i limited swinging mm1-mont m1 said lherviirk-nrrvslmnding to thv dvprvssinns nl hearing indepcndently nl" thvmuvvnwnts nl' Ihv plato; substantially :is dvsrrilwd. the truck frame,spring-snphoning nwnn; y ln'ti-stimnny whm'vul', l hnwlli-runnin .w1l'ur the end portinlnl nl' the hlnlstor, :mal my h'nnfl.

mmms for limit-in f t i@ dmvnwnn nmvenwnl m nl' the, bolster;suiistnntinlly ns dosrrihcd. "M (m 'l In Mm' 6. A truck bnlstcrmonnnvdtnswingnlmnl Witnvssvs: n vertical central axis, in vmnhixmtinn with E.Atrium (hinnmmi,

` (`|l,\i:l,r.. J. nmzs'rnml.

`unical roller hearings snppnrting Ihn vnd

